ALWAYS_INLINE -> NOINLINE

Signed-off-by: Matthias J. Kannwischer <matthias@zerorisc.com>

Author: mkannwischer

mlkem/mlkem_native.c

@@ -377,6 +377,7 @@
 #undef MLK_HAVE_INLINE_ASM
 #undef MLK_INLINE
 #undef MLK_MUST_CHECK_RETURN_VALUE
+#undef MLK_NOINLINE
 #undef MLK_RESTRICT
 #undef MLK_STATIC_TESTABLE
 #undef MLK_SYS_AARCH64

mlkem/mlkem_native_asm.S

@@ -398,6 +398,7 @@
 #undef MLK_HAVE_INLINE_ASM
 #undef MLK_INLINE
 #undef MLK_MUST_CHECK_RETURN_VALUE
+#undef MLK_NOINLINE
 #undef MLK_RESTRICT
 #undef MLK_STATIC_TESTABLE
 #undef MLK_SYS_AARCH64

mlkem/src/indcpa.c

@@ -468,7 +468,7 @@ int mlk_indcpa_keypair_derand(uint8_t pk[MLKEM_INDCPA_PUBLICKEYBYTES],
 #if defined(MLK_CONFIG_ENABLE_MLKEM_BRAID)
 MLK_INTERNAL_API
 #else
-static MLK_ALWAYS_INLINE
+static MLK_NOINLINE
 #endif
 int mlk_indcpa_enc_u(uint8_t ct_u[MLKEM_POLYVECCOMPRESSEDBYTES_DU],
                      mlk_polyvec *sp, mlk_poly *epp,
@@ -544,7 +544,7 @@ int mlk_indcpa_enc_u(uint8_t ct_u[MLKEM_POLYVECCOMPRESSEDBYTES_DU],
 #if defined(MLK_CONFIG_ENABLE_MLKEM_BRAID)
 MLK_INTERNAL_API
 #else
-static MLK_ALWAYS_INLINE
+static MLK_NOINLINE
 #endif
 int mlk_indcpa_enc_v(uint8_t ct_v[MLKEM_POLYCOMPRESSEDBYTES_DV],
                      const mlk_polyvec *sp, const mlk_poly *epp,

mlkem/src/sys.h

@@ -146,6 +146,22 @@
 #endif
 #endif /* !MLK_ALWAYS_INLINE */
 
+/*
+ * MLK_NOINLINE: Prevent inlining.
+ * - GCC/Clang: __attribute__((noinline))
+ * - MSVC: __declspec(noinline)
+ * - Other: (no annotation)
+ */
+#if !defined(MLK_NOINLINE)
+#if defined(_MSC_VER)
+#define MLK_NOINLINE __declspec(noinline)
+#elif defined(__GNUC__) || defined(__clang__)
+#define MLK_NOINLINE __attribute__((noinline))
+#else
+#define MLK_NOINLINE
+#endif
+#endif /* !MLK_NOINLINE */
+
 #ifndef MLK_STATIC_TESTABLE
 #define MLK_STATIC_TESTABLE static
 #endif